Finishing machine



Nov. 3, 1936. G. A. CARLSON FINISHING MACHINE 2 sheets-sheet 2 Filed Dec. 22, 1933 INVENTOR.

Patented Nov. 3, 1936 UNITED STATES PATENT OFFICE My invention relates to improvements in a finishing machine in which the object to be finished is actuated to move between and in contact with a pair of moving members; and the objects of .5 my improvements are, first, to provide a finishing machine in which the object to be finished is engaged by a pair of moving members and is actuated to move by the pair of moving members between them; second, to provide a finishing machine having a member with a conical surface for engaging the object to be finished and to actuate the object with a feeding movement past a finishing wheel; third, to provide a frustum shaped member for engaging the object to be finished and having adjusting means whereby the frustum shaped member may be adjusted tohave its axislocated at differentpositions below the axis of the object being finished to provide varying rates of speed with which the frustum shaped member will actuate the object past a finishing member; fourth, to provide a finishing machine with a frustum member having a portion constructed of leather or similar material with a conical surface for contacting the member being finished to feed the member past a finishing member; fifth, to provide a finishing machine with a frustum member having means for adjusting its position in a vertical plane and in a horizontal plane relative to the member being finished; sixth, to provide a finishing machine with a pair of wheel members for engaging opposite sides ofthe member being finished, the pair of wheel members being adapted to finish the member and actuate the member with a feed movement; seventh, to provide a finishing machine with a finishing wheel having its driving mechanism enclosed within a housing structure supporting the finishing wheel; eighth, to provide a finishing machine having its mechanism, for actuating the member being finished with a feed movement, pivotally mounted with adjusting mechanism connected therewith tovary the pivotal position of the mechanism; ninth, to provide a finishing machine with means for supporting themember being finished, this means being adjustably supported to vary its supporting position relative to the member being finished; tenth, to provide a finishing machine having a feed actuating mechanism together with its driving mechanism adjustably movable by a single adjusting mechanism; and eleventh, to provide an electric motor assembly with an adjustably mounted supporting mechanism.

-I attain these objects by the mechanism illus 'trated in the accompanying drawings, in which Figure 1 is a front elevation of the finishing machine; Fig. 2, a plan view of the finishing machine; Fig. 3, an end view of the finishing machine; Fig. 4, a sectional view taken on the line 4-4, Fig. 1; Fig. 5, a sectional View taken on the line 5-5, Fig. 2; Fig. 6, a partial end view of the feed mechanism; and Fig. 7, a sectional view taken on the line '|-'l, Fig. 3.

.Similar numerals refer to throughout the several views.

The finishing machine as herein described is so-called because of its adaptability for finishing round objects such as tubes, and shafts, a tube being disclosed at I, said tube I being finished by polishing, or bufllng the outside cylindrical surface thereof. It will be readily noted that my finishing machine as hereinafter described will thus be particularly adapted for any such similar finishing operations requiring the grinding, polishing, or bufiing of cylindrical surfaces.

The grinding machine will be provided with a base 2 upon which is suitably mounted and supported the housing structure 3 which extends upwardly therefrom and is constructed as an ensimilar parts closing housing for the electric motor assembly A and the driving mechanism operatively connected therewith as hereinafter more fully disclosed.

The housing structure 3 will form an enclosure extending entirely around the electric motor assembly Aand will be provided with an open portion 4 at its lower end and located at the rear .of the machine, this open portion providing necessary circulation of air to and from the housing structure 3, said circulation of air being caused more or less by the operation of the electric motor assembly A and its operatively connected mechanism. Also the wall 5 at the rear of the housing structure 3 may be provided with an open portion 5A extending between its sides and if desired for its full length to facilitate the assembly of the electric motor assembly A and its operative mechanism. The cover 6 is used to cover such suitable opening 5A in the wall 5 to close said opening in the wall 5, the cover 6 being structure 3 by means of the screws l3. The

housing member II is further provided with the boss portions I4 and I5 in which are respectively assembled the bearing assemblies I6 and I1. The housing member I I may be further provided with the flange I8 which is adapted to be secured to the housing member 6 by the screws I9. The shaft 26 extends through the housing member II and is revolvably supported in the bearing assemblies I6 and I1. The shaft 28 is provided with a shouldered portion 2I on which is mount ed the driven pulley 22, the driven pulley 22 being secured on the shoulder portion 2| by the nut 23. The driven pulley 22 is provided with the hub portion 24 which is spaced from the bearing assembly I6 by the spacer 25. The pulley 22 is provided with a pair of grooves 26 which are frictionally engaged by the driving belts 21. The driving belts 21 engage and are driven by frictional contact in the grooves 28 of the driving pulley 29 which is suitably secured against the collar 38 which in turn is supported on the driving shaft 3| of the electric motor assembly A, the pulley 29 being secured thereon by the nut 32.

The electric motor assembly A is provided with the flange or feet portions 33 which are supported on and are secured to the bracket member 34 by the bolts 35 and the nuts 36. The bracket member 34 may be provided with the bosses 31 which are pivotally supported relative to the center of the shaft I60, the shaft I60 having its ends extended and supported within the side walls of the housing structure 3, the shaft I68 being located endwise by the collars I6I which are secured to the shaft I 66 and engage the inside surfaces of the housing structure 3. The shaft I62 is similarly supported in the side walls of the housing structure 3 and is located endwise by the collars I63. The member I64 is suitably secured around the shaft I62 and extends through the bracket member 34 and is secured thereto by the nuts I65, the nuts I65 being movably mounted on the member I64 to enable the bracket member 34 to be adjustably and pivotally moved relative to the shaft I60 to provide for the adjustment of the tension of the belts 21.

The shaft 26 is further provided with a shoulder portion 38 on which is suitably secured the buifing, polishing, or finishing wheel or member 39, the wheel or member 39 being suitably secured to the shoulder portion 38 as to be driven therewith. Also the buifing wheel 39 may be further secured by the clamping washers 40 and M, the clamping washers 48 and M being secured in their clamping position by being pulled up tight by the nut 42 which may threadably engage the shoulder portion 38, the clamping washer 4! being thereby pulled tight against the spacer member 43 which is interposed between the clamping washer M and the bearing assembly I'I.

It is thus to be noted that the electric motor assembly A will drive the driving pulley 29 which in turn through the medium of the drive belts 21 will drive the driven pulley 22 which will in turn revolvably operate the shaft 20 together with the buffing wheel 39, which is secured thereto as above described.

The bufling wheel may be suitably chosen in accordance with the kind of finishing surface desired to be obtained on the tube I and the bufiing wheel may be conventionally constructed from disks of cotton or woolen fabric or other suitable material adapted for carrying the desired abrasive powders which are applied with the proper bonding material to the fabric of the disks. Obviously the type of buffing wheel will vary somewhat with the type of finish desired whether obtained by a grinding, bufiing or polishing operation.

Across the front of the machine is suitably mounted the bracket or plate member 44 which is provided with the flanges 45 by which the bracket member 44 may be secured to the front surface of the housing structure 3 by the screws 46. The bracket member 44 is further provided with the ledge or shoulder portion 41 on which is supported the bracket 48, the bracket 48 being provided with the flange portions 49 which are secured to the bracket member 44 by the screws 50. The bracket member 48 extends outwardly from the front face of the housing structure 3 and is provided with an upwardly extending portion 5I which is provided with a boss portion 52 through which extends the shaft or bolt 53 for pivotally supporting the bracket 54 which is provided with the arms or ears 55 for engaging the shaft 53, the ears 55 being secured on the shaft 53 by the nuts 56.

It is to be noted that the bracket 54 is adapted to pivotally move around the center of the shaft 53, the bracket 54 being provided with a pair of bosses 5! at its other end, the bosses 51 forming a yoke construction similar to the yoke construction formed by the ears 55 at the other end of the bracket 54. The shafts 58 are each supported in one of the bosses 51 of the bracket 54, the shafts 58 being fastened to the bosses 51 by the pins 59.

It is to be noted that the pins 58 extend only partially across the yoke portion between the bosses 51, the pins 58 swivelly supporting thereon the member 60 which is threadedly engaged by the adjusting screw 6I which is provided with the handle or button member 62 which is suitably secured to the adjusting screw 6| and enables the adjusting screw 6I to be revolved to vary the position of the shafts 58 relative to the shaft 53, thus providing pivotal movement for the bracket 54 around the center of the shaft 53. After an adjusting position has been selected by the adjusting screw BI, the adjusting screw 6| may be locked in its adjusted position by the nut member 63 being screwed down tight against the member 60.

It is to be noted that the adjusting screw 6I engages the member 64 which is swivelly supported in the yoke member 65 which is pivotally supported on the pin 66 which is mounted in and supported by the ears 61 which form a yoke portion suitably constructed with or mounted on the bracket 68 which is suitably provided with the flanges 69 to facilitate attachment to the upwardly extending portion 5I of the bracket 48 by the screws 10.

The bracket 48 may be suitably reinforced by the rib H and the bracket 68 may be suitably reinforced by the ribs 12. The bracket 54 is provided with a table portion 13 which is further provided with the ways 14A and in which slidably move similar way portions of the carriage 15.

The table portion 13 is suitably provided with the nut portion 16 which is suitably secured thereto and is engaged by the shaft 11 which may be threadably connected therewith. The shaft 11 is further connected with the hand wheel 18 provided with the handle I9. It will thus be noted that a revolving motion of the hand wheel 18 will thus slidablv move thecarriage 15 relative to the table portion 13 of the bracket 14.

The bracket is provided with the flange 8| which may be suitably secured to the carriage 15 and is adapted to move with the carriage 15 when operated by the hand wheel 18 as above described. The bracket 80 is provided with the boss 82 which in turn is provided with the clamping bosses 83 through which extend the clamping screw 84, the boss 82 being suitably slotted longitudinally through its length and through the clamping bosses 03 to permit the boss 82 to be clamped around the extension portion of the housing 86 through which extends the shaft 81 which is revolvably supported in the bearing assembly 88 and 89. The housing 86 is provided with the enlarged portion in which rotates the worm gear 9| which is suitably mounted on the shaft 81, the enlarged portion 90 of the housing 86 being provided with the bosses 92 in which is mounted the shaft 93 on which is secured the worm 94, the worm 94 operatively engaging and driving the worm gear 9|.

The enlarged portion 90 of the housing 86 is provided with the cover which is secured thereto by the screws 96. The pulleys 91, 98 and 99 may be individually mounted or mounted as a unit on the shaft 93 and suitably secured thereto so as to revolve therewith. The pulleys 91, 98 and 99 are adapted to be engaged by the belt I00 which frictionally engages and is driven by the pulleys IOI, I02 and I03 as disclosed. The pulleys IOI,'I02 and I03 may be mounted individually or mounted as a unit on the shaft I02A of the electric motor assembly B which is provided with the flange or feet .portions I04 which permit the securement of the electric motor assembly B to the table or bracket I05 by the screws I06. Also it is to be noted that the housing 86 will be provided with the upright portion I01 on which is suitably mounted the table or bracket member I08, the table member I08 being secured by the screws I09A. The table I08 is provided with the ears I09 which form a yoke portion for supporting the shaft M0 on which is pivotally supported the table I05 by means of its ear portions I I I which engage the shaft IIO.

It will thus be noted that the plate I05 may be pivotally moved around the center of the shaft I I0 to provide means for shifting the operating center of the electric motor assembly B to provide the proper driving tension on the driving belt I09. The table I08 is further provided with the ears II2 which form a yoke portion in which is mounted the shaft II3 which provides for the pivotal motion for the adjusting member I I4 which extends through the plate I05 and may be located in various adjusting positions by the nuts II5.

At the inner end of the shaft 81 is mounted the frustum member H6 or member provided with the conical surface H1. The frustum member I I6 is provided with the hub portion I I8 to facilitate its securement to the shaft 81, the frustum member H6 being suitably secured so as to be driven by the shaft 81. The frustum member IIB may be constructed with an outer member I I9 which is preferably constructed of leather or similar material, the member II9 forming the portion of the frustum I I8 which is provided with the conical surface I I1.

It is to be noted that as the electric motor assembly B operates "and drives the pulleys I 0 I 'I 02 and I03, the driving belt I00 will in turn operatively drive the pulleys 91, 98 and 99 which will in turn drive the shaft 93 together with its worm 94 which will in turn operatively drive the worm gear 9| which will rotate the shaft 81 together with the frustum member H6 and its member II9 having the conical face II1.

It is now to be noted that the tube I will-be supported in the V portion formed by the members I20 and I2I which are each provided with the angularportions I22 to provide the above mentioned V portion in which the tube I rests. The members I20 and I2I will be oppositely disposed about and secured tothe plate or member I23. The plate member I23 will be supported on the flange I24 of the boss or flange portion I25.

The boss portion I25 is provided with the slot I26 through which extends the bolt I21 which is mounted in the boss portion I28 of the lever member I29. The boss portion I28 is provided with the boss 530 through which extends the set screw |3I which contacts the boss portion I25 and forms engages the tube I, the buffing wheel 39 being operated in the direction as indicated by the arrow I32 in Fig. 3.

In order to further adjust the position of the plate member I23 in its assembled position on the levermember I29, the lever member I29 is provided with the boss portion I 33 which is pivotally mounted on the shaft I34, the shaft I34 being se-- cured in the boss I35 of the bracket member 68 by the pin I36, the lever member I29 being secured on the shaft I34 by the nut I31. The lever member is provided with the ear portions I38 which form a yoke member on the lever member I29, the ear portions I38 providing support for the set screws I39 which are adapted to contact the lever I40 of the member I4I which is pivotally supported on the shaft I42 which is secured in the boss I43 of the bracket member 68, the shaft I42 being secured therein by the pin I44.

It is to be noted that after the set screws I39 are adjusted to their desired position, the lever I40 will be clamped therebetween, the set screws I 39 being secured in their adjusted position by the lock nuts I45. The member MI is pivotally supported on the shaft I42 and to further secure the member MI in its adjusted position for holding the member I4I with its lever portion I40 in its adjusted position, in which is mounted the screws I39 the'bracket 69 is provided with the arm I42A to which is secured the boss I43 in which is mounted the set screw I46 which in turn is locked in its adjusted position by the nut I41. The set screw I48 contacts with the lever portion I48 which forms a portion of the member MI. The set screw I46 thus absorbs any reaction due to the tendency of the lever member I29 to move from its adjusted position relative to the member I 4|. The member I4I may be further secured on the shaft I42 by the nut I49.

It is to be noted that the member I23 will extend sufiiciently on each side of the buffing wheel 39 to properlysupport the tube I. The additional members I50 and I5I are each provided with the portions I22 for forming the above mentioned V portions for supporting the tube I.

It is to be noted that the plate or member I23 at itsunderside, the plate or'member 'I'23'being located substantially in vertical alignment with the axis of the tube I.

It is now to be noted that if the buffing wheel 39 is operated in the direction of the arrow I32 in Fig. 3, the tube I will be forced down into the V portions of the portions I22. At the same time the frustum member H6 will be operated in the direction of the arrow I52 as disclosed in Fig. 1, the conical surface II! of the frustum member IIS operatively engaging the outer surface of the tube I.

It is to be noted that the axis of the frustum member H6 will be located below the axis of the tube I, the tube I being located approximately on the horizontal center or axis of the buffing wheel 39 and above the axis of the frustum member I I6.

It is now to be noted that with the frustum member H6 being operated in the direction of the arrow I52 as disclosed in Fig. 1 and with one side of its conical surface H"! in contact with the outer surface of the tube I, that the outer surface of the tube I will thus contact with the conical surface Ill at a point slightly above the axis of the frustum member H6 to the right of the frustum member H6 as viewed in Figs. 1 and 2, the axis of the frustum member H6 being located at an angle relative to the axis of the tube I and the axis of the buffing wheel 39, the above mentioned inclination of the axis of the frustum member H6 being dictated by the angle of the conical surface I II.

It is now to be especially noted that with the movement of the frustum member H6 as above described and in contact with the tube I that the tube I will be. gradually moved to the left relative to the bufiing wheel 39 as viewed in Figs. 1 and 2, the speed of the longitudinal movement of the tube I which corresponds to its feeding speed, the feeding speed of the tube I being dictated obviously by the position of the axis of the frustum member H6 below the axis of the tube I. In other words, as the axis of the irustum member H6 is lowered below the axis of the tube I, the speed at which the tube I will move longitudinally past the buffing wheel 39 will be increased as the frictional point of contact of the outer surface of the tube I with the conical surface II I of the frustum member H6 is thus adjusted above the. axis of the frustum member H6, the above mentioned feeding speed being increased as the point of contact between the tube I and the conical surface I I! approaches a vertical center through the axis of the frustum member H6.

It is to be noted that the tube I will be revolved by frictional contact with the wheel 39 in the V portions I22, the revolving motion of the wheel 39 in the direction of the arrow I32, Fig. 3, tending to always force the tube I downwardly into the V portions I22. Also the frustum member H6 by contacting the outer surface of the tube I will provide a frictional or reaction member to maintain the tube I in the V portions I22 and thus prevent the tube from being forced out of the V portions I22 due to any horizontal force component which is developed by frictional contact with the wheel 39. It is also to be noted that the wheel 39 will be operated at a considerably higher speed than the speed at which the frustum member I I6 is operated, the speed of the frustum member H6 being designated by the required feeding speed of the tube I past the wheel 39, the feeding speed of the tube I being further designated by theposition of the axis of the frustum member H6 relative to the axis of the tube I as above described.

It is also pointed out that whereas a belt mechanism may be used in place of the Wheel 39, such belt mechanism forming the finishing means in some machines as used in the conventional field, I have found that the wheel member such as 39 used in conjunction with a frustum member such as H6 of my invention constitutes a much more economical and efficient mechanism than those used heretofore in finishing machines.

I claim:

I. In a machine for finishing a cylindrical member, the combination of a housing structure providing an enclosed chamber, a shaft revolvably mounted on said housing structure, an electric motor assembly suitably mounted Within the enclosed chamber of said housing structure, driving means operatively connecting said electric motor assembly and said shaft, a finishing member mounted on said shaft and adapted to revolve therewith, a bracket suitably supported on said housing structure, a second bracket pivotally mounted on said first mentioned bracket, a carriage rno-vably mounted on said second racket, a shaft revolvably supported on said carriage, a frustum member mounted on said last mentioned shaft and adapted to revolve therewith, said frustum member being provided with a conical surface, an electric motor assembly supported by said carriage, driving means operatively connecting said second electric motor assembly and said second mentioned shaft, means for adjusting the pivotal position of said second bracket to provide various operative positions of said frustum member, means for moving said carriage to provide various operative positions of said frustum member, a lever member pivotally supported on said first mentioned bracket,

means for supporting the cylindrical member in a position between said finishing member and said frustum member, said last mentioned means being supported on said lever member, and means for adjusting the pivotal position of said lever member to provide various positions of said cylindrical member.

2. In a machine for finishing the outside surface of a cylindrical member having a uniform diameter throughout its total length, the combination of a pair of members revolvably mounted to engage the outside surface of said cylindrical member, one of said members having a conical surface engaging said cylindrical member to feed it past said pair of members, fixed means for supporting said cylindrical member, said means being provided with a pair of V shaped means oppositely disposed about said pair of members revolvably mounted and each having its open side disposed at its upper side to permit said cylindrical member to be inserted from above, said means being adapted to support said cylindrical member when said pair of members are not engaging said cylindrical member, and pivotally mounted means for adjusting said fixed means in up and down and horizontal directions.

3. In a machine for finishing a cylindrical member, the combination of a plate member positioned adjacent said cylindrical member and having an upper edge portion extending longitudinally adjacent said cylindrical member, a pair of spaced groups of angle members mounted in oppositely disposed positions on said plate member and forming V shaped supports for said cylindrical member, a bracket member secured to said plate member, a pivotally mounted lever member, means for supporting said bracket member on said lever member to obtain pivotal and V longitudinal movement of said, bracket member,

means for locking said lever member in an adjusted position, a finishing member revolvably mounted and engaging said cylindrical member at a point between said pair of spaced, groups of angle members, and a frustrum member revolvably mounted and provided with a conical surface for engaging said cylindrical member at a point between said pair of spaced groups of angle members.

4. In a machine for finishing a cylindrical member, the combination of a finishing member revolvably mounted and engaging said cylindrical member, means for supporting said cylindrical member, said means extending on opposite sides of said finishing member, a frustrum member having a conical surface, one side only of said conical surface extending in a plane parallel with the side of said cylindrical member, said frustrum member being located in a plane located angularly relative to the axis of said finishing member to enable said conical surface to clear said means, lever means extending longitudinally substantially parallel with the axis of the cylindrical member for adjusting said frustrum member in an up and down direction, and means for adjusting said frustrum member in a horizontal plane extending substantially at right angles to the axis of said cylindrical member.

5. In a machine for finishing a cylindrical member, the combination of a polishing member revolvably mounted and engaging said cylindrical member, a pair of fixed means located in alignment and supporting said cylindrical member, a frustrum member revolvably mounted and provided with a conical surface engaging said cylindrical member at a point between the inner ends of said pair of fixed means, said frustrum member having its axis extending at an angle with the axis of said polishing member to enable said frustrum member to be located adjacent and in a position of clearance relative to one of said pair of fixed means, said frustrum member having its axis located relative to the axis of said cylindrical member so that the revolving movement of said frustrum member will move said cylindrical member longitudinally and continuously in one direction only on said fixed means relative to said polishing member, said fixed means positively maintaining said cylindrical member in a fixed position transversely relative to said frustrum and said polishing members, and a pair of pivotally mounted members, one of said pivotally mounted members being mounted on the other of said pivotally mounted members and supporting said fixed means, said pair of pivotally mounted members permitting said pair of fixed means to be adjustably moved in up and down, and horizontal directions.

6. In a machine for finishing a cylindrical member, the combination of means for supporting said cylindrical member, means for finishing said cylindrical member, a frustrum member revolvably mounted and engaging said cylindrical member to feed said cylindrical member past said second mentioned means, means for pivotally adjusting the position of said frustrum member in a vertical plane, a slide supporting said frustrum member, said slide extending longitudinally and at an acute angle relative to the axis of said frustrum member, and means for adjust; ing saidslide longitudinally to move said frustrum member to and from said cylindrical member.

'7. In a machine for finishing a cylindrical member, thecombination of means for supporting said cylindrical member, a finishing member movably mounted and engaging said cylindrical member, a frustrum member revolvably mountedand engaging said cylindrical member, a bracket structure suitably mounted and supporting said frustrum member, an electric motor assembly supported on said bracket structure, driving means operatively connecting said frustrum member with said electric motor assembly, pivot ally mounted means for pivotally moving said frustrum member together with said electric motor assembly and said driving means in a vertical plane, and means for moving said frustrum member to and from said cylindrical member in a horizontal plane.

8. In a machine for finishing a cylindrical member, the combination of means for supporting said cylindrical member, a finishing member movably mounted and engaging said cylindrical member, a frustrum member revolvably mounted and engaging said cylindrical member, said frustrum member being independently mounted relative to said means, a second means adjustably supporting said frustrum member, said second means comprising a pivotally mounted shaft member extending longitudinally in a vertical plane and adjustably engaging a portion of said first mentioned means, an electric motor assembly adjustably supported on said second means to move around a pivot, and driving means operatively connecting said electric motor assembly and said frustrum member, said driving means being adjusted by the movement of said electric motor assembly about its pivot.

9. In a machine for finishing a cylindrical member, the combination of means for supporting said cylindrical member, a frustum member revolvably mounted and engaging said cylindrical member, a finishing wheel revolvably mounted and engaging said cylindrical member, a lever ture, a bracket suitably mounted on said housing a structure, a lever member pivotally mounted and provided with bossp'ortions, a second member pivotally mounted and provided with a pair of lever arms, adjustable members mounted in the boss portions of said lever member and engaging one of the lever arms of said second member, means suitably mounted and provided with adjusting means for engaging the other of the lever arms of said second member, means for supporting said cylindrical member, said means being adjustably mounted on said lever member, and a pair of wheel members revolvably mounted and engaging said cylindrical member, one of said wheel members being mounted on said housing structure, the other of said Wheel members being mounted on said bracket structure.

11. In a machine for finishing a cylindrical member, the combination of a housing structure, a bracket member suitably mounted on said housing structure and provided with a right angle shoulder portion, a second bracket suitably secured to said first mentioned bracket member and provided with a surface contacting the right angle shoulder portion of said first mentioned bracket member, means for supporting said cylindrical member, said means being supported on said second bracket member, a frustum member revolvably mounted and engaging said cylindrical member, said frustum member being supported on said second bracket member, and a finishing wheel revolvably supported on said housing structure and engaging said cylindrical mem,

ber.

12. In a machine for finishing a cylindrical member, the combination of means for supporting said cylindrical member, a finishing wheel revolvably mounted and engaging said cylindrical member, a frustum member revolvably mounted and engaging said cylindrical member, a housing structure supporting said frustum member, a bracket member suitably mounted and supporting said housing structure, a second bracket member pivotally mounted on said housing structure, an electric motor assembly suitably mounted on said second mentioned bracket member and provided with pulley members, pulley members suitably mounted and operatively connected with said frustum member, a driving belt operatively connecting the pulley members on said electric motor assembly with said pulley members operatively connected with said frustum member,,and means suitably anchored and adjustably connected with said second mentioned bracket member for adjustably changing the position of said electric motor assembly together with its pulley members relative to said pulley members operatively connected with said frustum member.

13. In a machine for finishing a cylindrical member, the combination of a finishing member revolvably mounted and engaging said cylindrical member, a frustum member revolvably mounted and engaging said cylindrical member, a structure supporting said cylindrical member, means for adjusting said structure in vertical and transverse directions, a lever member pivotally mounted and supporting said frustum member,

means for adjusting said frustum member to and from said cylindrical member, an adjusting mechanism operatively connected with said lever member to adjust the position of said frustum member in a vertical plane, and means for driving said frustum member in its revolvable movement.

14. In a machine for finishing a cylindrical member, the combination of a pair of members revolvably mounted on opposite sides of and engaging said cylindrical member, a bracket, a plate member mounted on said bracket and extending between said pair of members revolvably mounted, angle members mounted on opposite sides of said plate member and forming a V for supporting said cylindrical member, means for pivotally supporting said bracket on the machine at a point in a vertical plane extending outside of the space between the surfaces of said pair of members revolvably mounted and engaging said cylindrical member to permit adjustable movement of said plate together with said angle members in an up and down direction between said pair of members revolvably mounted, and a lever means pivotally supporting said first mentioned means and permitting adjustment of said lever means independently of said first mentioned means.

15. In a machine for finishing a cylindrical member, the combination of a pair of members revolvably mounted on opposite sides of and engaging said cylindrical member, a lever. member pivotally mounted and supporting one of said pair of members, said lever member being adapted for adjustable movement to move one of said pair of members in a vertical plane, means for locking said lever member in an adjusted position, a second lever member pivotally mounted, a bracket member mounted on said second lever member, said bracket member being adapted for movement in a plurality of planes independently of said lever member to permit said bracket member to be adjusted independently of said second lever member, support members on said bracket member and adapted to support said cylindrical member, and means for adjustably locking said bracket member in a selected position on said lever member.

16. In a machine for finishing a cylindrical member and provided with a pair of members revolvably mounted on opposite sides of and engaging said cylindrical member, the combination of a hub member pivotally mounted and provided with a pair of arms, a lever member pivotally mounted and provided with a forked portion, adjustable members mounted in the forked portion of said lever member and engaging one of the arms of said hub member, an adjustably mounted member engaging the other of the arms of said hub member, a bracket member adjustably mounted on said lever member, and support means for said cylindrical member, said support means being mounted on said bracket member.

GUSTAVE A. CARLSON. 

